consumer math:

#1. bought 3 pairs of pants at $29.99 each with a 10% coupon and 5% sales tax. what's the total?

#2. bought a bike for $180.00, helmet for $14.95, and gloves for $8.95. used a 15% off coupon and there was 4% sales tax. what's the total?

please help and show work, thank you!! :)